Question

我正在使用引导模式来让消防员在我正在处理的应用中更新其状态。模态具有在单击时发出POST请求的按钮。 csrf tokens are disabled for testing purposes

models.py

class Firefighter(models.Model):  

  STATUS_OPTIONS = (
    ('AV', 'Available'),
    ('OD', 'On Duty'),
    ('UN', 'Unavailable'),
    ('LV', 'Leave'),
  )

  first_name = models.CharField("First Name", max_length = 200)
  last_name = models.CharField("Last Name", max_length = 200)
  status = models.CharField("Status", max_length = 20 , choices=STATUS_OPTIONS, default='Available')

views.py

def updateStatus(request, id):
  from django.http import JsonResponse
  if request.method=='POST' and request.is_ajax():
    try:
      obj = Firefighter.objects.get(id=id)
      obj.data_attr = request.POST['status']
      obj.save()
      return JsonResponse({'status':'Record Saved'})
    except Firefighter.DoesNotExist:
      return JsonResponse({'status':'Record does not exist'})
  else:
      return JsonResponse({'status':'Invalid POST request'})

运行时返回Record Saved JSON响应。

urls.py

urlpatterns = [
    url(r'^$', views.home, name='home'),
    url(r'^status/$', views.status, name='status'),
    url(r'^status/update/(?P<id>\d+)/$', views.updateStatus, name='update'),

按钮jQuery

$('#btnAvailable').on('click', function() {
    // You gotta include the csrf_token in your post data
    $.post(`/status/update/${clickedID}/`, {'status': 'AV'}, function() {
      $('#change-status').modal('hide');
      location.reload(true)
    });
  });

一切都按预期运行，chrome没有显示POST请求的控制台错误，但status没有保存在数据库上。例如，/status/update/22/的状态当前设置为UN（不可用），请求后的请求应将其状态设置为AV（可用），但状态永远不会在数据库中更改。

Answer 1

从我所看到的情况来看，你根本没有设置status，你改变了一个名为data_attr的属性（在运行时附加它），然后调用save，这导致数据库中没有保存，预期

只需将data_attr更改为status，就可以了

def updateStatus(request, id):
  from django.http import JsonResponse
  if request.method=='POST' and request.is_ajax():
    try:
      obj = Firefighter.objects.get(id=id)
      obj.status = request.POST['status']
      obj.save()
      return JsonResponse({'status':'Record Saved'})
    except Firefighter.DoesNotExist:
      return JsonResponse({'status':'Record does not exist'})
  else:
      return JsonResponse({'status':'Invalid POST request'})

此外，您的状态默认为“可用”，否则您选择（AV，OD，...）。

这也应该修复，比如

STATUS_AVAILABLE = 'AV'
STATUS_ON_DUTY = 'OD'
STATUS_UN_AVAILABLE = 'UV'
STATUS_ON_LEAVE = 'OL'

STATUS_OPTIONS = (
    (STATUS_AVAILABLE, 'Available'),
    (STATUS_ON_DUTY, 'On Duty'),
    (STATUS_UN_AVAILABLE, 'Unavailable'),
    (STATUS_ON_LEAVE, 'Leave'),
  )
status = models.CharField(..., choices=STATUS_OPTIONS, default=STATUS_AVAILABLE)

Django Ajax - POST请求成功，数据未保存在DB上

1 个答案: